Monads are indivisible entities, the basic elements that constitute the world.
单子是不可分割的实体，是构成世界的基本元素。
Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.
世界是一块画布，我们每个人都是自己方式的艺术家。
The health of our oceans directly impacts the health of our communities and economies.
学习不是试错的问题，而是洞察力的问题。